Abstract: The purpose of this study is to present how ancient and modern thinkers describe politics and to discuss reasons for differences seen in these definitions. In the ancient period, the identification of human being as a political entity by nature caused politics to be seen as the most supreme of all human activities. For the ancient thinkers, politics is conceptualized as a pluralist area in which the common issues are discussed by equals and also which excludes inequality. Ancient thinker Aristotle says that the purpose of politics is “good life”. However, modern political thought which began with Machiavelli identified politics with the concepts of force, power and violence. Politics is defined by Machiavelli and his successors as the legitimate organization of physical violence, the distribution of power, value and resources by authority. While in the Ancient Greece violence is excluded from the public-political sphere, It has become one of the central concepts defining the political society in the modern world. While the human being was defined as a political entity (zoon politikon) in the ancient period, it is usually seen as an economic entity (homo economicus) in the modern period. For the ancients good life means a life that is dedicated to politics; nevertheless, it has been often associated with economic activity by the moderns. This study argues that the main difference between the political definitions of ancients and moderns stem from differences between their perspectives about the aim of human and human life.